When Caffrey plays his game of PG, the dealer hands him his tiles and the pile closest to the camera is spilled. In the next shot facing the dealer, the pile is neatly stacked.
When Jones comes to get Bai from the conference room after she laughs at the recording, the same two FBI agents walk up the stairs twice behind him as he talks with Peter.
When Neal gets the tracking watch, he is told that his anklet has been deactivated 30 seconds ago, but when Agent Cruz cuts the anklet, it quickly alarms.